25686252 has 108 divisors (see below), whose sum is σ = 73939320. Its totient is φ = 7471872.

The previous prime is 25686217. The next prime is 25686263. The reversal of 25686252 is 25268652.

25686252 is a `hidden beast` number, since 25 + 6 + 8 + 625 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 546493 + ... + 546539.

Almost surely, 2^25686252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25686252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36969660).

25686252 is an abundant number, since it is smaller than the sum of its proper divisors (48253068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25686252 is a wasteful number, since it uses less digits than its factorization.

25686252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 88 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 25686252 is about 5068.1606130824. The cubic root of 25686252 is about 295.0531437341.

The spelling of 25686252 in words is "twenty-five million, six hundred eighty-six thousand, two hundred fifty-two".